Subtract 42/70 from 30/56
30/56 - 42/70 is -9/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
30/56 = 30 × 5/56 × 5 = 150/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
42/70 = 42 × 4/70 × 4 = 168/280 - Subtract the two like fractions:
150/280 - 168/280 = 150 - 168/280 = -18/280 - After reducing the fraction, the answer is -9/140
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